Maro Publications

Thermally Conductive Materials

Notes

*2/22/2013
from 7/26/2012

Maro Topics

Comments

Patent Abstracts

Patent Titles

Composites

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Notes

1. “Good electrical insulators, by their very nature, also tend to be good thermal insulators, which is undesirable. Thermal insulating behavior, particularly for air-cooled electrical equipment and components, reduces the efficiency and durability of the components as well as the equipment as a whole. It is desirable to produce electrical insulation systems having maximum electrical insulation and minimal thermal insulation characteristics.

What is needed is electrical insulation that can conduct heat higher than that of conventional methods, but that does not compromise the electrical insulation and other performance factors including thermal and mechanical capabilities.

With the foregoing in mind, methods and apparatuses consistent with the present invention, which inter alia facilitates the transport of phonons through a high thermal conductivity (HTC) impregnated medium to reduce the mean distances between the HTC materials below that of the phonon mean free path length. This reduces the phonon scattering and produces a greater net flow or flux of phonons away from the heat source. The resins may then be impregnated into a host matrix medium, such as a multi-layered insulating tape.

High Thermal Conductivity (HTC) organic-inorganic hybrid materials may be formed from discrete two-phase organic-inorganic composites, from organic-inorganic continuous phase materials based on molecular alloys and from discrete organic-dendrimer composites in which the organic-inorganic interface is non-discrete within the dendrimer core-shell structure. Continuous phase material structures may be formed which enhance phonon transport and reduce phonon scattering by ensuring the length scales of the structural elements are shorter than or commensurate with the phonon distribution responsible for thermal transport, and/or that the number of phonon scattering centers are reduced such as by enhancing the overall structural order of the matrix, and/or by the effective elimination or reduction of interface phonon scattering within the composite.”

[Smith, Stevens and Wood, US Patent 8,216,672 (7/10/2012)]

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Interested!!
Bookmark this page to follow future developments!.
(RDC 6/5/2012)

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Roger D. Corneliussen
Editor
www.maropolymeronline.com

Maro Polymer Links
Tel: 610 363 9920
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E-Mail: cornelrd@bee.net  

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Copyright 2012 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen
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* Date of latest addition; date of first entry is 7/26/2012.